package com.atguigu.springcloud.controller;

import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.lb.MyLB;
import com.sun.jndi.toolkit.url.Uri;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.net.URL;
import java.util.List;

@RestController
@Slf4j
public class OrderController {
    //public static final String PAYMENT_URL = "http://localhost:8001";
    // 通过在eureka上注册过的微服务名称调用
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";
    @Resource
    private RestTemplate restTemplate;
    @Resource
    private DiscoveryClient discoveryClient;
    @Resource
    private MyLB myLB;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return  restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }
    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult getPayment(@PathVariable Long id)
    {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/"+id, CommonResult.class);
    }

    @GetMapping("/consumer/payment/getEntity/{id}")
    public CommonResult getEntity(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> forEntity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if (forEntity.getStatusCode().is2xxSuccessful()){
            return forEntity.getBody();
        }else {
            return new CommonResult(444,"操作失败");
        }
    }

    @GetMapping("/consumer/payment/createForEntity")
    public CommonResult<Payment> createForEntity(Payment payment){
        return  restTemplate.postForEntity(PAYMENT_URL+"/payment/create",payment,CommonResult.class).getBody();
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if (instances==null||instances.size()<=0){
            return null;
        }
        ServiceInstance instances1 = myLB.instances(instances);
        URI uri =instances1.getUri();
        log.info(uri.toString());
        return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }
}
